US4682756A - Hydraulically operated self-closing two-way seat-type valve - Google Patents

Hydraulically operated self-closing two-way seat-type valve Download PDF

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Publication number
US4682756A
US4682756A US06/886,541 US88654186A US4682756A US 4682756 A US4682756 A US 4682756A US 88654186 A US88654186 A US 88654186A US 4682756 A US4682756 A US 4682756A
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US
United States
Prior art keywords
piston
locking body
valve
cover
closing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US06/886,541
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English (en)
Inventor
Manfred Hartwig
Georg Rausch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth AG
Original Assignee
Mannesmann Rexroth AG
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Filing date
Publication date
Application filed by Mannesmann Rexroth AG filed Critical Mannesmann Rexroth AG
Assigned to MANNESMANN REXROTH GMBH reassignment MANNESMANN REXROTH GMBH ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HARTWIG, MANFRED, RAUSCH, GEORG
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Publication of US4682756A publication Critical patent/US4682756A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/36—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor
    • F16K31/363—Actuating devices; Operating means; Releasing devices actuated by fluid in which fluid from the circuit is constantly supplied to the fluid motor the fluid acting on a piston

Definitions

  • the present invention relates to a hydraulic self-closing two-way valve of the type including a housing forming a valve seat and a locking body cooperating with the valve seat and connected to and actuated by an actuating piston which is loaded by pressurized fluid and is displaced in a recess provided in a cover connected to a control block in which the valve is inserted.
  • Such valves are formed as built-in valves and are accomodated in control blocks in accordance with a lay-out plan PD 81 010/9.84 of the assignee.
  • an additional means is required, which is provided on the actuating piston cooperating with the locking body of the valve; that additional means in the switch-off position of the control valve, in which the control pressure is blocked up to the built-in valve, causes the closing of the locking body of the valve.
  • the actuating piston is accomodated in the cover and is connected, in the opening direction of the locking body, with that body in a locking fashion by means of coupling elements. Due to the connection of the coupling elements the cover is comparatively large. Therefore specific designs have been required for self-closing two-way seat-type valves, which has been quite expensive.
  • a hydraulically operated self-closing two-way valve particularly a built-in valve, comprising a housing having an inner opening and a valve seat at said inner opening; a piston-shaped locking body received in said opening and cooperating with said valve seat and having a guide portion and a seat portion, said guide portion being of greater diameter than that of said seat portion; a cover mounted on said housing and having a recess; a hydraulically loadable actuating piston received in said recess and being operative for actuating said locking body, said actuating piston, being of diameter greater than that of said guide portion said actuating piston having, at a side thereof, which faces away from said closing body, a piston-shaped extension which is guided in said cover and limits in said cover a chamber, said locking body having between said guide portion and said seat portion a ring-shaped surface, said actuating piston having at a side thereof facing away from said locking body, a circular surface, said ring-shaped surface and said circular surface being loaded with
  • the separation wall may be a part of said cover.
  • Said piston-shaped extension and said additional extension may be of the same diameter and have a common axial bore also extending through said piston, said additional extension having radial bores connected to said axial bore, said axial bore and said radial bores connecting said further chamber with said chamber.
  • FIG. 1 is a sectional view of the cover with an actuating piston of the valve according to the invention
  • FIG. 2 is a sectional view of the sleeve-shaped housing with the locking body of the valve in the inserted position in the control block;
  • FIG. 3 is a block diagram of the hydraulically operated device according to the invention.
  • reference numeral 1 designates a cover which is provided with a recess 2 which receives an actuating piston 3 with two opposing piston rod-shaped extensions 4 and 5.
  • the recess 2 is limited in the direction of extension 4 by a separating wall 6 of the cover.
  • An axial bore 7 is provided in that separation wall, through which extension 4 protrudes.
  • This recess 2 is limited in the direction of extension 5 by means of a plate 8 which has a pocket bore 9 for guiding the extension 5.
  • Sealing O-rings 10, 11 prevent overflow of the control fluid in the recess 2 in the direction of the pocket bore 2 or in the direction of a locking or closing body 12.
  • the actuating piston 3 is also fluid-tight guided in recess 2 through a seal ring 13 so that no overflow of the control fluid would occur via piston 3 in the recess 2 in a region 2a or a region 2b.
  • a sleeve-shaped housing 15 is fluid-tight inserted, by means of sealing rings 18 and 19, in a recess 16 of a control block 17 shown in section.
  • the locking body 12 of the valve is guided in an axial bore 20 of the sleeve-shaped housing 15 and cooperates with a valve seat 22 formed on the sleeve 15. In the illustrated closing position the connection from B to A is interrupted.
  • Cover 1 is secured at a receiving plane 30 of the control block 17 by means of bolts 28 (FIG. 1).
  • bolts 28 FIG. 1
  • Extension 4 of the actuating piston 3 becomes engaged, upon the assembly of cover 1 with sleeve 15, in a pocket bore 32 of the locking body 12 and is in a form-locking connection, during operation, with the locking body 12 via that pocket bore.
  • FIG. 3 The assembled position of the cover with the sleeve-shaped housing and the locking body of the valve is shown in FIG. 3.
  • a working fluid flows from a pump conduit P to the connection B of the valve and from hence into an annular chamber 67.
  • region 2a of the recess 2 of the cover 1 is under pump pressure via a control conduit 50.
  • a control chamber 20a is in turn in connection with a tank T through a connection Y and a control conduit 51.
  • the recess or chamber 9 is in connection, via bores 52, 53 in extensions 4, 5 and piston 3, with the control chamber 20a and also in connection with tank T via the control conduit 51.
  • Region 2b of the recess 2 receiving the piston 3 is loaded via a control connection X and control conduit 54, for example by means of a magnetically-actuated three-way two position valve 55 either with the tank pressure or with the pump pressure.
  • region 2b is connected at two switch positions a, b with the tank.
  • region 2a is continually under the pump pressure and the size of the pressure-loaded annular surface 62 of the actuating piston 3 is greater than the sum of the ring-shaped surface 60 and the consumer pressure-loaded circular surface 68 of the locking body and the seat 21, it is ensured that the actuating piston 3 tightly pushes, via extension 4, the locking body 12 with its seat region 21 against the seat 22 of the sleeve-shaped housing 15.
  • the locking body 12 is again moved to its locking position when the magnetically actuated switch valve 55 takes its shown switch-off position "a" for example also upon a fall-out of the flow, by means of a spring 69, in which position the region 2b of the recess 2 is in connection with tank T.
  • the actuating piston 3 is loaded in the closing direction so that the piston is again displaced to its closing position. In case of a flow fall-out the valve closes automatically.
  • both extensions 4 and 5 have axial bores 52 which are coaxial.
  • Extension 4 has radially extended bores 53 which can be oblique as shown in FIG. 3. Radial bores 53 merge into axial bore 52. Axial bore 52 also extends through piston 3.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Fluid-Driven Valves (AREA)
US06/886,541 1985-07-16 1986-07-15 Hydraulically operated self-closing two-way seat-type valve Expired - Fee Related US4682756A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19853525331 DE3525331A1 (de) 1985-07-16 1985-07-16 Hydraulisch betaetigtes selbstschliessendes zwei-wege-sitzventil
DE3525331 1985-07-16

Publications (1)

Publication Number Publication Date
US4682756A true US4682756A (en) 1987-07-28

Family

ID=6275880

Family Applications (1)

Application Number Title Priority Date Filing Date
US06/886,541 Expired - Fee Related US4682756A (en) 1985-07-16 1986-07-15 Hydraulically operated self-closing two-way seat-type valve

Country Status (3)

Country Link
US (1) US4682756A (enrdf_load_stackoverflow)
JP (1) JPS6220983A (enrdf_load_stackoverflow)
DE (1) DE3525331A1 (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898430A (en) * 1987-12-24 1990-02-06 Alfred Teves Gmbh Traction slip and brake slip-controlled brake system
US5746245A (en) * 1996-01-04 1998-05-05 Siemens Measurements Limited Meters
US6454238B1 (en) * 2001-06-08 2002-09-24 Hoerbiger Kompressortechnik Services Gmbh Valve
US20090057593A1 (en) * 2007-08-31 2009-03-05 Husky Injection Molding Systems Ltd. Staggered Cylinders in a Valve Gate Apparatus
US20130105525A1 (en) * 2011-10-28 2013-05-02 Nordson Corporation Dispensing module and method of dispensing with a pneumatic actuator

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3805288A1 (de) * 1988-02-19 1989-08-31 Rexroth Mannesmann Gmbh Regelventil
DE4121018C2 (de) * 1991-06-26 2001-11-08 Bosch Gmbh Robert Hydraulische Einrichtung für eine Sicherheitssteuerung

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608859A (en) * 1968-04-23 1971-09-28 Messerschmitt Boelkow Blohm Controllable check valve
DE2714410A1 (de) * 1976-03-31 1977-10-20 Sund Aakesson Ab Vorrichtung zur steuerung eines fluessigkeitsstroms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608859A (en) * 1968-04-23 1971-09-28 Messerschmitt Boelkow Blohm Controllable check valve
DE2714410A1 (de) * 1976-03-31 1977-10-20 Sund Aakesson Ab Vorrichtung zur steuerung eines fluessigkeitsstroms

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Mannesmann Rexroth Catalog pp. 1 30. *
Mannesmann Rexroth Catalog pp. 1-30.

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4898430A (en) * 1987-12-24 1990-02-06 Alfred Teves Gmbh Traction slip and brake slip-controlled brake system
US5746245A (en) * 1996-01-04 1998-05-05 Siemens Measurements Limited Meters
US6454238B1 (en) * 2001-06-08 2002-09-24 Hoerbiger Kompressortechnik Services Gmbh Valve
US20090057593A1 (en) * 2007-08-31 2009-03-05 Husky Injection Molding Systems Ltd. Staggered Cylinders in a Valve Gate Apparatus
US7836915B2 (en) * 2007-08-31 2010-11-23 Husky Injection Molding Systems Ltd. Staggered cylinders in a valve gate apparatus
US20130105525A1 (en) * 2011-10-28 2013-05-02 Nordson Corporation Dispensing module and method of dispensing with a pneumatic actuator
US8794491B2 (en) * 2011-10-28 2014-08-05 Nordson Corporation Dispensing module and method of dispensing with a pneumatic actuator

Also Published As

Publication number Publication date
DE3525331A1 (de) 1987-01-29
JPS6220983A (ja) 1987-01-29
DE3525331C2 (enrdf_load_stackoverflow) 1987-10-22

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MANNESMANN REXROTH GMBH, D-8770 LOHR, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNORS:HARTWIG, MANFRED;RAUSCH, GEORG;REEL/FRAME:004582/0843

Effective date: 19860710

Owner name: MANNESMANN REXROTH GMBH,GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HARTWIG, MANFRED;RAUSCH, GEORG;REEL/FRAME:004582/0843

Effective date: 19860710

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 19910728